HSRT Quantitative Reasoning and Numeracy 3

Question 1

A pharmacy prepares a 0.9% NaCl (normal saline) solution. 0.9% means 0.9 g of NaCl per 100 mL. How many milligrams of NaCl are in a 500 mL bag?

Accepted Answer

4500 mg

Answer

450 mg

Answer

900 mg

Answer

45 mg

Question 2

A hospital reports a mortality rate of 8.2 per 1000 patient admissions. If the hospital had 12,500 admissions last year, how many deaths occurred?

Accepted Answer

103 deaths

Answer

82 deaths

Answer

820 deaths

Answer

1025 deaths

Question 3

A patient requires a potassium infusion. The order reads: 'Infuse 40 mEq KCl in 100 mL NS over 4 hours.' Potassium chloride is available as 2 mEq/mL. How many mL of KCl concentrate must be added to the NS bag?

Accepted Answer

20 mL

Answer

40 mL

Answer

10 mL

Answer

80 mL

Question 4

A research paper reports that a new drug reduces LDL cholesterol by a mean of 38 mg/dL (SD = 12 mg/dL). A patient's baseline LDL is 165 mg/dL. After treatment, what is the expected LDL range for approximately 95% of patients like this one?

Accepted Answer

103–151 mg/dL (expected mean reduction 38, ± 2 SD = ± 24 mg/dL)

Answer

127–165 mg/dL (38 mg/dL reduction only)

Answer

90–165 mg/dL (full range of responses)

Answer

115–141 mg/dL (mean ± 1 SD)

Question 5

A clinical nutrition calculation shows a patient needs 1.5 g protein/kg/day. The patient weighs 70 kg. Their current enteral formula provides 60 g protein per 1000 mL. If the patient is receiving 1200 mL/day, are protein needs being met?

Accepted Answer

No — patient needs 105 g/day but receives only 72 g/day from the formula

Answer

Yes — 1200 mL provides 1.2 × 60 = 72 g, exceeding requirements

Answer

Yes — the formula provides exactly the required protein

Answer

Cannot be determined without the patient's serum albumin level

Question 6

A patient's INR on warfarin was 1.8 (target 2.0–3.0). The physician increases the weekly warfarin dose by 15%. The previous weekly dose was 35 mg. What is the new weekly dose?

Accepted Answer

40.25 mg

Answer

40.5 mg

Answer

38 mg

Answer

42 mg